Correct Value Of Proportional Pruning Formula

　　 Proportional clipping The most important thing is the value of the formula and the rationality of the formula. There is no more standard formula to locate, and it is also difficult for industrial board making. In order to grasp the skills of formula application, we should analyze the following aspects:

Formula, age and body shape analysis

Under normal body size, they were divided into young, middle-aged and aged groups according to their age. Set the formula according to different ages. Young people have smaller body size and smaller range of circumference, but because of their differences in height, the added value is slightly larger in terms of formula, such as sleeve cage depth, sleeve opening, shoulder height and crotch. The difference of body shape between the middle age group is bigger, the change range of circumference is larger, the increase crotch value should be smaller, and the old people's girth change is bigger, and the body size difference is bigger. The crotch value should be smaller. The increase crotch value is a formula with 2 / 10 circumference, so the depth increases by 0.2cm when the girth increases every LCM. When using 1.5 / 10 circumference to increase LCM, the depth will increase by 0.15cm; the 1 / 10 circumference will increase 0.1cm. The middle-aged people changed greatly, using the 1.8 / 10B+ fixed number or 1.5 / lOB circumference + fixed number. The degree of circumference of elderly people varies greatly. For the chest circumference, the minimum chest circumference is about 95cm, the large is about 120cm or even larger. Such a change range, such as the use of 2 / 10B number, is calculated by increasing the LCM circumference of the cages and increasing the 0.2cm by 0.2cm. In this way, the speed of the crotch increase is too fast for the old body. Therefore, the 1.5 / l0B bust + fixed number or the 1 / 10B plus number should be used. In general, the smaller the number is, the faster the speed of the crotch is increased, and the more the number is, the more extensive the adaptation will be and the slower the speed of the crotch.

Formulation analysis

The current formula is varied. Useful values, useful formulas and useful formulas can also cause some disadvantages to the push plates in the board, because every link in the garment must be deduced in a certain proportion, so that the size of the plate is proportional to the trumpet. In the application and search formula, the size of the smallest size is chosen first, then the size of the largest size is determined, and the difference is released from it. For example, the chest size of the small size is 90cm, the bag mouth should be about 13cm, the large chest circumference is 100cm, the bag mouth should be about 14cm, and the formula can be known as 1 / 10B+4cm. If the foot of the trousers is in the mouth, if the hips of the trousers are 90cm, the feet will be 18cm, using formula 1 / 10+9=18cm, 1.5 / 10H+4.5=18cm or 2 / 10H=18cm; when the hips are in llOcm, then 1 / 10H+9=11+9=20cm, 1.5 / 10H+4.5=2lcm, 2 / 10H=92cm, from the size of the crotch value to choose the suitable size for the prevailing foot mouth, and we can deduce the formula.

Matching analysis of formulas

The formula is related to the final effect of industrial board and push plate, and can not be matched at will, such as chest width and shoulder width. Sleeve cage depth It should be closely integrated with sleeve opening, sleeve cage width and sleeve hypertrophy. Otherwise, the plate will be released according to a certain proportion formula, and the largest number can hardly be matched successfully.

L, foot width and shoulder width

The width of the front chest and shoulder width should be synchronized when the formula is set. The chest width is 1.5 / 10B+3cm, then the chest width increases by 4cm. The total shoulder width is increased by 1.2cm. The width of the chest is increased by 1 / 2, and the 0.6cm is synchronized with the value of the front chest width. The number released will not change. The width of the front chest is calculated by 1.8/10B. Then the chest circumference increases by 4cm, the front chest width increases by 0.72cm, and the shoulder plus 0.72cm is also too large. Another 1.5 / 10B calculation is that the front chest circumference and the rear chest circumference are mostly 1 / 4B or 2.5 / 10B, and 9.5 / 10B 1.5 / 10B actual sleeve width is 1/10B, and the value of 2 / 10B is added before and after, then the general sleeve hypertrophy is 2 / 10B number.

2. The sleeve is deep and the sleeve is deep.

　　 sleeve If the actual sleeve is deep, then the 2 / 10B+ fixed number -0.5 / 10B (shoulder skew) the actual sleeve length is 1.5 / 10B+, and the depth of the sleeve is 1.5 / 10B, so that the value of the crotch is the best. If the 1.5 / 10B+ number is used to calculate the cage depth, the actual sleeve cage depth is 1.5 / 10B+ number - 0.5 / 10B, the actual sleeve depth is the ratio of the B / the radar number, and the sleeve depth must be determined according to the number of fixed / fixed numbers. The cage depth is usually calculated by 2 / 10B, and it is calculated by 1.5 / 10B.